Battery pack and mobile power supply

Abstract

The application relates to the battery technical field, and particularly discloses a battery pack and a mobile power source. The battery pack comprises a support, a first conductive sheet, a first insulating cover, at least one battery cell and sealing glue. The battery cell is installed in the support. One end of the support is provided with a first convex rib which is annular to form a first containing space. The first conductive sheet and the first insulating cover are located in the first containing space, the thickness direction of the first conductive sheet is defined as a first direction, and in the first direction, the first conductive sheet is located between the support and the first insulating cover and is electrically connected with the battery cell. In a direction perpendicular to the first direction, a first channel is formed between the outer periphery of the first insulating cover and the inner periphery of the first convex rib which faces the first containing space. The sealing glue is located in the first channel to adhesively seal the first insulating cover, the support and the first convex rib. The end of the support and the first channel formed by the first convex rib and the first insulating cover are used to contain the sealing glue for sealing, so that the waterproof sealing performance is improved, and the light weight and thin type are also beneficial.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery pack and a power bank. Background Technology

[0002] Power banks typically contain a battery pack. Since power banks inevitably encounter humid environments during use, they usually need to have high waterproof performance to prevent moisture from entering the battery pack and causing short circuits.

[0003] The waterproof structure of battery packs in related technologies usually involves adding a waterproof cover to the outside of the battery pack. While this can achieve effective waterproofing, it also has the disadvantages of being bulky and costly to manufacture. Utility Model Content

[0004] In view of this, this application provides a battery pack and a power bank that achieves overall lightweighting while being effectively waterproof.

[0005] One embodiment of this application provides a battery pack, including a bracket, a first conductive sheet, a first insulating cover, and at least one battery cell. The battery cell is mounted in the bracket. One end of the bracket has a first protruding ridge, which forms a first receiving space in an annular shape. The first conductive sheet and the first insulating cover are located in the first receiving space. The thickness direction of the first conductive sheet is defined as a first direction, and in the first direction, the first conductive sheet is configured to be located between the bracket and the first insulating cover and electrically connected to the battery cell. In a direction perpendicular to the first direction, a first channel is formed between the outer periphery of the first insulating cover and the inner periphery of the first protruding ridge facing the first receiving space. The battery pack also includes a sealant, which is configured to adhere and seal the first insulating cover, the bracket, and the first protruding ridge within the first channel.

[0006] In the aforementioned battery pack, the battery cells are housed within a bracket, eliminating the need for a separate waterproof outer casing. This achieves basic waterproofing while also reducing the overall size of the battery pack, resulting in weight reduction and miniaturization, and ultimately lowering costs. Secondly, the bonding of the bracket end with the first insulating cover further enhances the overall waterproof performance of the battery pack, reducing the risk of short circuits caused by moisture entering through the bracket end. Furthermore, the first insulating cover forms a first channel with the first protruding ridge in the non-thickness direction (i.e., perpendicular to the first direction) to accommodate sealant for sealing the first insulating cover, bracket, and first protruding ridge. This improves stability and waterproof sealing while also contributing to the weight reduction and thinning of the battery pack.

[0007] In some embodiments of this application, the first conductive sheet includes a body and an external terminal connected to the body. The body is located within a first receiving space and is stacked with a first insulating cover in a first direction. A first protrusion is configured to have a first opening communicating with the first receiving space. The first opening is configured to allow the external terminal to pass through and to allow for the injection of adhesive to form a sealant.

[0008] The external terminals of the first conductive sheet are used to connect other electronic components to power or charge them. The design of the first opening on the first protrusion facilitates the extension of the external terminals. Furthermore, the flat extension of the external terminals promotes a better seal after the sealant is applied. Additionally, applying sealant through the first opening facilitates sealing, and the relatively high pressure of the sealant at this opening allows it to spread to the gaps between the external terminals, the first insulating cover, and the support. This reduces the risk of moisture entering the battery pack along the external terminals, thereby improving the overall waterproof performance of the battery pack.

[0009] In some embodiments of this application, sealant is used to fill the gaps between the external terminal and the first insulating cover, as well as the gaps between the external terminal and the bracket.

[0010] By filling the gaps between the terminals and the first insulating cover, as well as the gaps between the external terminals and the bracket, with sealant, moisture can be prevented from entering the battery pack through these gaps, thereby improving the overall waterproof performance of the battery pack.

[0011] In some embodiments of this application, the end of the bracket with the first protruding ridge is also provided with an injection groove. The injection groove is configured to be recessed from one end of the bracket toward the opposite end, and the injection groove communicates with the first receiving space through a first opening. Sealant is also filled in the injection groove.

[0012] First, the design of the glue injection groove facilitates the collection of glue that overflows or drips during glue injection, reducing the risk of glue overflowing or dripping onto other parts. Second, since the glue injection groove connects to the first receiving space through the first opening, the sealant filling the glue injection groove cooperates with the sealant filling the first channel, which facilitates further sealing between the external terminals and the bracket, thereby improving the overall waterproof performance of the battery pack.

[0013] In some embodiments of this application, in the width direction of the first opening, the glue injection groove is configured to have a width greater than the width of the first opening, and in the width direction of the first opening, the two ends of the glue injection groove extend from the two ends of the first opening, respectively.

[0014] With the two ends of the aforementioned glue injection groove extending from the two ends of the first opening respectively, it is beneficial to improve the sealing of the external terminals at the first opening, thereby better ensuring the waterproofness of the battery pack.

[0015] In some embodiments of this application, the glue injection groove has an inner surface configured as an inclined surface such that the cross-section of the glue injection groove in a direction perpendicular to a first direction gradually decreases from one end of the support with a first protruding ridge toward the opposite end.

[0016] The aforementioned inclined surface design can reduce the volume of the dispensing tank, which helps to save adhesive when filling the tank. At the same time, the inclined surface design also has a guiding effect on the adhesive, which helps to accelerate the uniform filling of the adhesive and reduce the risk of a false impression of fullness caused by gaps left in some areas of the tank due to the lack of timely filling of adhesive in the early stage.

[0017] In some embodiments of this application, the glue injection groove is pyramidal or frustum-shaped.

[0018] The above-described shape of the glue injection groove, where all sides of the injection groove are inclined, is conducive to better guiding the flow of the glue and completing the filling of the glue more quickly.

[0019] In some embodiments of this application, at least two first conductive sheets and at least two first insulating covers are respectively configured, and at least two first protrusions are correspondingly configured to enclose at least two first receiving spaces. Each first receiving space corresponds to receiving one first conductive sheet and one first insulating cover. In a direction perpendicular to the first direction, a first channel is formed between the inner periphery of each first receiving space and the outer periphery of the received first insulating cover facing the corresponding first receiving space. Each first channel is filled with sealant.

[0020] Multiple first convex ridges form multiple first receiving spaces to accommodate multiple first conductive sheets and first insulating covers at the same end of the bracket, which helps to improve the flexibility of battery pack design, such as, but not limited to, the same-side output of positive and negative electrodes, and also helps to save materials to reduce costs.

[0021] In some embodiments of this application, the two first convex edges forming two adjacent first receiving spaces share a common edge.

[0022] The two first protrusions of the two adjacent first receiving spaces share a common edge, which makes full use of the first protrusions and helps to reduce the space occupied by the entire first protrusion on the end of the bracket. In addition, it also helps to reduce the requirements for the machining accuracy of the first protrusions.

[0023] In some embodiments of this application, of the at least two first conductive sheets, at least one first conductive sheet is electrically connected to the positive electrode of the battery cell, and the remaining first conductive sheets are electrically connected to the negative electrode of the battery cell.

[0024] The above design leads the positive and negative terminals of the battery cell from the same end of the bracket. Furthermore, the first protruding ridge and sealant help to enhance the electrical insulation effect between the first conductive sheet connected to the positive terminal and the first conductive sheet connected to the negative terminal, which helps to reduce the risk of short circuit.

[0025] In some embodiments of this application, the other end of the bracket with the first protruding ridge is configured to have a second protruding ridge, the second protruding ridge forming a ring around a second receiving space. The battery pack also includes a second conductive sheet and a second insulating cover, the second conductive sheet and the second insulating cover being located in the second receiving space, and in a first direction, the second conductive sheet being configured to be located between the bracket and the second insulating cover and electrically connected to the battery cell.

[0026] In a direction perpendicular to the first direction, a second channel is formed between the outer periphery of the second insulating cover and the inner periphery of the second protrusion facing the second receiving space. Sealant is also configured to adhere and seal the second insulating cover, the support, and the second protrusion within the second channel.

[0027] When the battery cells in the battery pack are connected to external electronic components through opposite sides of the bracket, the second insulating cover at the end of the bracket helps to improve the overall waterproof performance of the battery pack and reduce the risk of short circuit due to moisture entering from the end of the bracket. In addition, the second insulating cover forms a second channel with the second protrusion in the non-thickness direction (i.e., the direction perpendicular to the first direction) to accommodate sealant to seal the second insulating cover, the bracket and the second protrusion. This not only improves stability and waterproof sealing but also contributes to the lightweight and thinner design of the battery pack.

[0028] Some embodiments of this application provide a portable power bank, including a device body and a battery pack as described in any of the above embodiments. The battery pack is installed in the device body.

[0029] In the aforementioned power bank's battery pack, the battery cells are housed within a bracket, eliminating the need for a separate waterproof casing. This achieves basic waterproofing while also reducing the overall size of the battery pack, resulting in weight reduction and miniaturization, and ultimately lowering costs. Secondly, the adhesive bonding between the bracket's end and the first insulating cover further enhances the battery's overall waterproof performance, reducing the risk of short circuits caused by moisture entering through the bracket's end. Furthermore, the first insulating cover forms a first channel with the first protruding ridge in the non-thickness direction (i.e., perpendicular to the first direction) to accommodate sealant for sealing the first insulating cover, bracket, and first protruding ridge. This improves stability and waterproof sealing while also contributing to a lighter and thinner battery pack. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0031] Figure 1 This is a schematic diagram of the structure of a mobile power supply provided in an embodiment of this application; Figure 2A disassembly diagram of a power bank provided in an embodiment of this application; Figure 3 This is a three-dimensional structural diagram of a battery pack provided in an embodiment of this application; Figure 4 This is a partial disassembly diagram of a battery pack provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the first support provided in an embodiment of this application; Figure 6 A cross-sectional perspective view of a battery pack at one angle, provided in an embodiment of this application; Figure 7 This is a cross-sectional view of a battery pack provided in one embodiment of this application from another angle.

[0032] Explanation of main component symbols 200-Power bank; 201-Device body; 100-Battery pack; 203-Shell; 10-Bracket; 21-First conductive sheet; 31-First insulating cover; 40-Battery cell; 11-First end; 12-Second end; X-First direction; 13-First protrusion; 130-First receiving space; 110-Through hole; 211-Body; 213-Connecting terminal; 215-External terminal; 131-First channel; 133-First opening; 113-Glue injection groove; 1130-Inner surface; 14-Second protrusion; 140-Second receiving space; 23-Second conductive sheet; 33-Second insulating cover; 141-Second channel; 123-Glue injection groove; 10a-First bracket; 10b-Second bracket; 60-Sealing ring. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0035] Power banks typically contain a battery pack. During use, power banks inevitably encounter humid environments; therefore, they usually need high waterproof performance to prevent moisture from entering the battery pack and causing short circuits. The waterproof structure of the battery pack in related technologies usually involves adding a waterproof cover to the outside of the battery pack. While this achieves effective waterproofing, it also has drawbacks such as larger size and higher manufacturing costs.

[0036] One embodiment of this application provides a battery pack, including a bracket, a first conductive sheet, a first insulating cover, and at least one battery cell. The battery cell is mounted in the bracket. One end of the bracket has a first protruding ridge, which forms a first receiving space in an annular shape. The first conductive sheet and the first insulating cover are located in the first receiving space. The thickness direction of the first conductive sheet is defined as a first direction, and in the first direction, the first conductive sheet is configured to be located between the bracket and the first insulating cover and electrically connected to the battery cell. In a direction perpendicular to the first direction, a first channel is formed between the outer periphery of the first insulating cover and the inner periphery of the first protruding ridge facing the first receiving space. The battery pack also includes a sealant, which is configured to adhere and seal the first insulating cover, the bracket, and the first protruding ridge within the first channel.

[0037] In the aforementioned battery pack, the battery cells are housed within a bracket, eliminating the need for a separate waterproof outer casing. This achieves basic waterproofing while also reducing the overall size of the battery pack, resulting in weight reduction and miniaturization, and ultimately lowering costs. Secondly, the bonding of the bracket end with the first insulating cover further enhances the overall waterproof performance of the battery, reducing the risk of short circuits caused by moisture entering through the bracket end. Furthermore, the first insulating cover forms a first channel with the first protruding ridge in the non-thickness direction (i.e., perpendicular to the first direction) to accommodate sealant for sealing the first insulating cover, bracket, and first protruding ridge. This improves stability and waterproof sealing while also contributing to the weight reduction and thinning of the battery pack.

[0038] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] Please see Figure 1 and Figure 2 One embodiment of this application provides a portable power bank 200. The portable power bank 200 includes a device body 201 and a battery pack 100 installed in the device body 201. As an exemplary example, the portable power bank 200 can be a portable power source for outdoor use or a home energy storage system for home energy storage. The portable power bank 200 can directly discharge to electrical devices using the battery pack, making it particularly suitable for travelers in the wild, thereby effectively charging mobile phones, cameras, and tablets, and can also power other electrical devices such as air conditioners and refrigerators. Furthermore, the portable power bank 200 can be quickly charged using an external power source.

[0040] The main body 201 includes a housing 203, within which the battery pack 100 is disposed. In some embodiments, the main body 201 may further include an inverter (not shown), which is disposed in the housing 203 and electrically connected to the battery pack 100. The inverter is used for power conversion, capable of converting the direct current (DC) power from the battery pack 100 into alternating current (AC) power for use by electrical devices. The inverter can also convert AC power from the power grid into DC power to charge the battery pack 100.

[0041] Please refer to the following: Figures 3 to 7 In some embodiments, the battery pack 100 includes a bracket 10, a first conductive sheet 21, a first insulating cover 31, and at least one battery cell 40. The battery cell 40 is housed within the bracket 10. By housing the battery cell 40 within the bracket 10, the battery cell 40 is initially isolated from the outside environment, thus eliminating the need for a separate waterproof casing. This achieves initial waterproofing while also reducing the overall size of the battery pack 100, resulting in a lighter and smaller battery pack. Furthermore, eliminating the need for a waterproof casing also helps reduce the production costs of the battery pack 100 and the power bank 200. In this embodiment, multiple battery cells 40 are housed within the bracket 10. The following description will assume the presence of multiple battery cells 40.

[0042] The bracket 10 includes a first end 11 and a second end 12 facing away from each other, wherein the direction in which the first end 11 and the second end 12 are spaced apart is defined as a first direction X. The first end 11 of the bracket 10 is provided with a first protruding ridge 13, which protrudes along the first direction X in a direction away from the first end 11. The first protruding ridge 13 forms a ring around a first receiving space 130.

[0043] The first conductive sheet 21 is disposed at the first end 11 of the bracket 10 and located within the first receiving space 130. The thickness direction of the first conductive sheet 21 is aligned with the first direction X. The first conductive sheet 21 is electrically connected to the battery cell 40. Specifically, in some embodiments, combined with... Figure 4As shown, a through hole 110 is provided in the area of ​​the first end 11 corresponding to the first receiving space 130 to realize the electrical connection between the first conductive sheet 21 and the battery cell 40. In some embodiments, there are multiple through holes 110, and each through hole 110 corresponds to an electrical connection terminal of a battery cell 40 (not shown in the figure). The first conductive sheet 21 includes a body 211 located in the first receiving space 130, a connecting terminal 213 connected to the body 211 and protruding toward the battery cell 40, and an external terminal 215 connected to the body 211 and extending out of the first receiving space 130. It can be understood that when there are multiple battery cells 40, there are also multiple connecting terminals 213, and each connecting terminal 213 passes through a corresponding through hole 110 to connect to an electrical connection terminal of a battery cell 40. Compared with directly opening a large hole on the first end 11 to correspond to the electrical connection terminals of all battery cells 40, the arrangement of through holes 110 corresponding one-to-one with the electrical connection terminals of the battery cells 40 is more conducive to avoiding the infiltration of moisture. External terminal 215 is used to connect other electronic components to power or charge them.

[0044] The first insulating cover 31 is located in the first receiving space 130 and covers the first conductive sheet 21. Furthermore, in the first direction X, the first conductive sheet 21 is located between the first end 11 of the bracket 10 and the first insulating cover 31. More specifically, the first insulating cover 31 is at least stacked with the body 211 of the first conductive sheet 21 in the first direction X. The first end 11 of the bracket 10, in conjunction with the first insulating cover 31, houses the through hole 110 and the connection terminal 213, which helps to better improve the overall waterproof performance of the battery pack.

[0045] In a direction perpendicular to the first direction X, an annular first channel 131 is formed between the outer periphery of the first insulating cover 31 and the inner periphery of the first protrusion 13 facing the first receiving space 130. More specifically, the first insulating cover 31 completely covers the body 211 of the first conductive sheet 21, at which time the first channel 131 extends downward along the first direction X to the first end 11 of the space 10.

[0046] The battery pack 100 also includes a sealant (not shown), which is located within the first channel 131 to bond and seal the first insulating cover 31, the first end 11 of the bracket 10, and the first protruding ridge 13. Bonding the first end 11 of the bracket 10 to the first insulating cover 31 helps to improve the overall waterproofness of the battery pack and reduces the risk of moisture entering the interior from the bracket end, causing a short circuit. Furthermore, the first insulating cover 31 forms a first channel 131 with the first protruding ridge 13 in the non-thickness direction (i.e., the direction perpendicular to the first direction X) to accommodate the sealant and seal the first insulating cover 31, the bracket 10, and the first protruding ridge 13. This improves stability and waterproof sealing while also contributing to the lightweight and thinner design of the battery pack 100, avoiding the increased thickness caused by creating additional space for the sealant in the thickness direction (i.e., the first direction X), and also helps to reduce the amount of sealant used.

[0047] In some embodiments, the first protruding ridge 13 is further provided with a first opening 133, which connects to the first receiving space 130 for the external terminal 215 to pass through and for the injection of sealant to form a sealant. The design of the first opening 133 on the first protruding ridge 13 facilitates the extension of the external terminal 215, and the flat extension of the external terminal 215 facilitates sealing after the sealant is formed. Furthermore, the injection of sealant through the first opening 133 facilitates sealing of the first opening 133, and the relatively high pressure of the sealant at the first opening 133 allows the sealant to spread to the gap between the external terminal 215 and the first insulating cover 31 and the first end 11 of the bracket 10, thereby reducing the risk of moisture entering the battery pack 100 along the external terminal 215 and improving the overall waterproof performance of the battery pack 100.

[0048] Furthermore, the sealant can fill the gap between the external terminal 215 and the first insulating cover 31, as well as the gap between the external terminal 215 and the first end 11 of the bracket 10, which helps to prevent moisture from entering the battery pack 100 through the gaps, thereby improving the overall waterproof effect of the battery pack 100.

[0049] In some embodiments, the first end 11 of the bracket 10 may also be provided with an injection groove 113. The injection groove 113 is recessed from the first end 11 of the bracket 10 toward the opposite second end 12, and the injection groove 113 is connected to the first receiving space 130 through the first opening 133.

[0050] The design of the injection groove 113 facilitates the collection of adhesive that overflows or drips during the injection of adhesive through the first opening 133, reducing the risk of adhesive overflowing or dripping onto other parts. In this embodiment, sealant is also filled in the injection groove 113. Since the injection groove 113 connects to the first receiving space 130 through the first opening 133, the sealant filled in the injection groove 113 cooperates with the sealant filled in the first channel 131, which facilitates further sealing at the first opening 133, that is, further sealing between the external terminal 215 and the first end 11 of the bracket 10, thereby improving the overall waterproof effect of the battery pack 100.

[0051] Furthermore, in some embodiments, the width of the glue injection groove 113 in the width direction Y of the first opening 133 may be greater than the width of the first opening 133. Even further, in the width direction Y of the first opening 133, both ends of the glue injection groove 113 may extend from both ends of the first opening 133. In this case, with both ends of the glue injection groove 113 extending from both ends of the external terminal 213 in the width direction Y, it is beneficial to improve the sealing performance of the external terminal 213 at the first opening 133, thereby better ensuring the waterproofness of the battery pack 100. Moreover, the fact that both ends of the glue injection groove 113 can extend from both ends of the first opening 133 also improves the continuity of the sealing between the side and bottom surfaces of the external terminal 213, further enhancing the sealing performance of the external terminal 213 at the first opening 133, and also facilitating the better collection of glue overflowing or dripping during glue injection at the first opening 133.

[0052] The dispensing tank 113 has an inner surface 1130. In some embodiments, the inner surface 1130 includes an inclined surface, which allows the cross-section of the dispensing tank 113 perpendicular to the first direction X to gradually decrease from the first end 11 of the support 10 toward the opposite second end 12. The design of the inclined surface reduces the volume of the dispensing tank 113, which helps to save adhesive when filling the dispensing tank 113. At the same time, the design of the inclined surface also has a guiding effect on the adhesive, which helps to accelerate the uniform filling of the adhesive and reduce the risk of a false sense of fullness caused by gaps left in some areas of the tank due to the lack of timely filling of adhesive in the early stage.

[0053] In some embodiments, the dispensing groove 113 may be, but is not limited to, a pyramidal or frustum-shaped form. It is understood that in this case, all sides of the dispensing groove 113 are inclined surfaces, which helps to better improve the flow of the adhesive within the dispensing groove 113, enabling faster filling of the adhesive and improving both the filling rate and the filling effect.

[0054] In some embodiments, there may be at least two first conductive sheets 21 and at least two first insulating covers 31, and correspondingly, at least two first protrusions 13 are also configured to form at least two first receiving spaces 130. Each first receiving space 130 receives one first conductive sheet 21 and one first insulating cover 31. In a direction perpendicular to the first direction X, a first channel 131 is formed between the inner periphery of each first receiving space 130 and the outer periphery of the received first insulating cover 31 facing the corresponding first receiving space 130. Each first channel 131 is filled with sealant. The formation of multiple first receiving spaces 130 by multiple first protrusions 13 facilitates the reception of multiple first conductive sheets 21 and first insulating covers 31 at the same end of the support 10, which improves the design flexibility of the battery pack 100 and also helps to reduce the coverage area, thereby saving materials and reducing costs.

[0055] For example, Figure 4 As shown, of the at least two first conductive pieces 21, at least one first conductive piece 21 is electrically connected to the positive terminal of at least one battery cell 40, and the remaining first conductive pieces 21 are electrically connected to the negative terminal of at least one battery cell 40. This design extends the positive and negative terminals of multiple battery cells 40 from the same end of the support 10. Furthermore, the first protrusion 13 and the sealant enhance the electrical insulation between the first conductive piece 21 connected to the positive terminal and the first conductive piece 21 connected to the negative terminal, thus reducing the risk of short circuits.

[0056] Furthermore, in some embodiments, the two first protrusions 13 forming two adjacent first receiving spaces 130 share a common edge, which is beneficial to make full use of the first protrusions 13 while reducing the space occupied by the entire first protrusions 13 on the first end 11 of the bracket 10. In addition, it is also beneficial to reduce the processing accuracy requirements of the first protrusions 13.

[0057] When the battery cell 40 in the battery pack 100 is connected to external electronic components (electrical devices or external power sources) through opposite sides of the bracket 10, the second end 12 of the bracket 10 can also be configured to have a second protruding ridge 14. The second protruding ridge 14 forms a ring around the second receiving space 140. The battery pack 100 may also include a second conductive sheet 23 and a second insulating cover 33. The second conductive sheet 23 and the second insulating cover 23 are located in the second receiving space 140 and in the first direction X. The second conductive sheet 23 is configured to be located between the second end 12 and the second insulating cover 14 and electrically connected to the battery cell 40. In a direction perpendicular to the first direction X, a second channel 141 is formed between the outer periphery of the second insulating cover 33 and the inner periphery of the second protruding ridge 14 facing the second receiving space 140. Sealant is also located in the second channel 141 to bond and seal the second insulating cover 33, the second end 12 of the bracket 10, and the second protruding ridge 14. The second end 12 of the bracket 10, in conjunction with the second insulating cover 33, helps to improve the overall waterproof performance of the battery pack 100 and reduces the risk of short circuit caused by moisture entering from the second end 12 of the bracket 10. In addition, the second insulating cover 33 forms a second channel 141 with the second protrusion 14 in the non-thickness direction (i.e., the direction perpendicular to the first direction X) to accommodate sealant to seal the second insulating cover 33, the second end 12 of the bracket 10, and the second protrusion 14. This not only improves stability and waterproof sealing but also contributes to the lightweight and thinner design of the battery pack 100.

[0058] It is understood that the structure of the second conductive sheet 23 may be similar to that of the first conductive sheet 21, for example, but not limited to including an external terminal (not shown in the figure), and the structure of the second protruding ridge 14 may be similar to that of the first protruding ridge 13, for example, but not limited to having a second opening (not shown in the figure) corresponding to the external terminal of the second conductive sheet 23. Correspondingly, the second end 12 may also be provided with a glue injection groove 123. The specific structure of the above components will not be described in detail in this application.

[0059] In some embodiments, the support 10 may include a first support 10a and a second support 10b, which cooperate to house the battery cell 40. The first end 11 is the end of the first support 10a facing away from the second support 10b, and the second end 12 is the end of the second support 10b facing away from the first support 10a. The detachable first support 10a and second support 10b facilitate the assembly of the battery pack 100 by housing the battery cell 40.

[0060] In some embodiments, a sealing ring 60 may be provided at the connection between the first bracket 10a and the second bracket 10b. The sealing ring 60 helps to improve the sealing effect between the first bracket 10a and the second bracket 10b, thereby improving the overall waterproof effect of the battery pack 100.

[0061] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A battery pack, comprising a bracket, a first conductive sheet, a first insulating cover, and at least one battery cell, wherein the battery cell is mounted in the bracket, characterized in that, One end of the bracket is provided with a first protruding ridge, which forms a first receiving space in an annular shape. The first conductive sheet and the first insulating cover are located in the first receiving space. The thickness direction of the first conductive sheet is defined as the first direction. In the first direction, the first conductive sheet is configured to be located between the bracket and the first insulating cover and electrically connected to the battery cell. In a direction perpendicular to the first direction, a first channel is formed between the outer periphery of the first insulating cover and the inner periphery of the first protrusion facing the first receiving space. The battery pack also includes a sealant configured to adhere and seal the first insulating cover, the bracket, and the first protrusion within the first channel.

2. The battery pack according to claim 1, characterized in that, The first conductive sheet includes a body and an external terminal connected to the body. The body is located within the first receiving space and is stacked with the first insulating cover in the first direction. The first protrusion is configured to have a first opening, which communicates with the first receiving space. The first opening is configured to allow the external terminal to pass through and to allow the injection of adhesive to form the sealant.

3. The battery pack according to claim 2, characterized in that, The sealant fills the gap between the external terminal and the first insulating cover, as well as the gap between the external terminal and the bracket.

4. The battery pack according to claim 2, characterized in that, The bracket is provided with a glue injection groove at one end where the first protruding ridge is located. The glue injection groove is configured to be recessed from one end of the bracket toward the opposite end, and the glue injection groove is connected to the first receiving space through the first opening. The sealant is also filled in the glue injection groove.

5. The battery pack according to claim 4, characterized in that, In the width direction of the first opening, the glue injection groove is configured to have a width greater than the width of the first opening, and in the width direction of the first opening, the two ends of the glue injection groove extend from the two ends of the first opening, respectively.

6. The battery pack according to claim 4, characterized in that, The glue injection groove has an inner surface that is configured as an inclined surface so that the cross section of the glue injection groove perpendicular to the first direction gradually decreases from the end of the bracket with the first protruding ridge toward the opposite end.

7. The battery pack according to claim 6, characterized in that, The glue injection groove is pyramidal or frustum-shaped.

8. The battery pack according to any one of claims 1 to 7, characterized in that, The first conductive sheet and the first insulating cover are respectively configured in at least two, and the first protrusion is correspondingly configured in at least two to form at least two first receiving spaces. Each first receiving space corresponds to receiving one first conductive sheet and one first insulating cover. In a direction perpendicular to the first direction, the inner periphery of each first receiving space and the outer periphery of the receiving first insulating cover facing the corresponding first receiving space form the first channel. The sealant fills each first channel.

9. The battery pack according to claim 8, characterized in that, The two first convex edges that form two adjacent first receiving spaces share a common edge.

10. The battery pack according to claim 8, characterized in that, Of the at least two first conductive sheets, at least one first conductive sheet is electrically connected to the positive terminal of the battery cell, and the remaining first conductive sheets are electrically connected to the negative terminal of the battery cell.

11. The battery pack according to any one of claims 1 to 7, characterized in that, The bracket is provided with a first protruding ridge at one end and a second protruding ridge at the other end. The second protruding ridge forms a ring around a second receiving space. The battery pack also includes a second conductive sheet and a second insulating cover. The second conductive sheet and the second insulating cover are located in the second receiving space. In the first direction, the second conductive sheet is configured to be located between the bracket and the second insulating cover and electrically connected to the battery cell. In a direction perpendicular to the first direction, a second channel is formed between the outer periphery of the second insulating cover and the inner periphery of the second protrusion facing the second receiving space, and the sealant is further configured to adhere and seal the second insulating cover, the bracket and the second protrusion within the second channel.

12. A portable power bank, characterized in that, It includes a device body and a battery pack as described in any one of claims 1 to 11, wherein the battery pack is installed in the device body.

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